中国安全科学学报 ›› 2019, Vol. 29 ›› Issue (9): 70-76.doi: 10.16265/j.cnki.issn1003-3033.2019.09.011

• 安全工程技术科学 • 上一篇    下一篇

水下V形坡隧道烟气温度纵向衰减研究

姜学鹏1,2,3 副教授, 谢智云1,3, 于思维1,3, 廖湘娟**1,3   

  1. 1 武汉科技大学 资源与环境工程学院,湖北 武汉 430081;
    2 湖北省工业安全工程技术研究中心,湖北 武汉 430081;
    3 武汉科技大学 消防安全技术研究所,湖北 武汉 430081
  • 收稿日期:2019-05-15 修回日期:2019-07-16 出版日期:2019-09-28 发布日期:2020-10-30
  • 通讯作者: ** 廖湘娟(1993—),女,湖北汉川人,硕士研究生,主要研究方向为隧道火灾烟气控制。E-mail:1908487498@qq.com。
  • 作者简介:姜学鹏 (1976—),男,山东平度人,博士,副教授,主要从事隧道及地下空间火灾动力学研究与防治工作。 E-mail:jxp5276@126.com。
  • 基金资助:
    国家自然科学基金面上项目资助(51874213,51806156);湖北省自然科学基金青年项目资助(2018CFB186、2018CFB226)。

Study on longitudinal decay of flue gas temperature in underwater V-shaped slope tunnels

JIANG Xuepeng1,2,3, XIE Zhiyun1,3, YU Siwei1,3, LIAO Xiangjuan1,3   

  1. 1 School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan Hubei 430081, China;
    2 Hubei Provincial Industrial Safety Engineering Technology Research Center, Wuhan Hubei 430081, China;
    3 Fire Safety Technology Institute, Wuhan University of Science and Technology, Wuhan Hubei 430081, China
  • Received:2019-05-15 Revised:2019-07-16 Online:2019-09-28 Published:2020-10-30

摘要: 为研究水下V形坡隧道的火灾烟气温度分布,首先采用理论分析和数值模拟相结合的方法,分析水平隧道、单坡度隧道和V形坡隧道内的烟气流动及温度分布特性;然后探究隧道坡形对烟气运动的影响及不同坡形隧道的温度分布差异;最后构建一种适用坡度在1%~8%的V形坡隧道内烟气温度衰减的预测模型。结果表明:V形坡隧道内的沿程温度衰减服从指数函数分布,相比单坡度隧道上游的温度衰减缓慢,相比单坡度隧道下游的温度衰减迅速,同时比水平隧道的温度衰减略快;预测模型中的无量纲温升参数与火源功率呈现0.6次方的指数关系,与隧道坡度存在一定的非线性关系。

关键词: 隧道火灾, 水下V形坡, 数值模拟, 烟气特性, 温度衰减

Abstract: In order to study temperature distribution of fire smoke in underwater V-shaped slop tunnels, firstly, smoke flow and temperature distribution characteristics in horizontal tunnels, single-slope tunnels and V-slope tunnels were compared and analyzed through theoretical analysis and numerical simulation method. Then the influence of tunnel slope shapes on flue gas movement and temperature distribution of different slope tunnels were explored. Finally, an attenuation prediction model of flue gas temperature under roof of V-slope tunnels within 1 to 8 degrees was established. The results show that temperature distribution along V-shaped slop tunnel obeys exponential function distribution, which is slower than that upstream of single-slope tunnels, faster than that downstream of single-slope tunnels, and slightly faster than that of horizontal tunnels. At the same time, the dimensionless temperature rise parameters of prediction model have an exponential relationship of 0.6 with power of fire source and a certain non-linear relationship with tunnel slops.

Key words: tunnel fire, underwater V-shaped slope, numerical simulation, smoke characteristics, temperature decay

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